you could go with Williams sights or a few others. My LTR has Zephyr sights - not nearly as nice but they work.I believe that the LTR is a great idea, but getting those sights is a major problem since there are sooooo many others that think the same thing. Now they are back ordered till October... I am sort of SOL now since building mine. I was waiting for these sights, but using my scope instead... last weekend my scope broke..
The boys from Appleseed had a shoot here in town just last week. I understand it was a big success but I was unable to attend due to a scheduling conflict.